BulletSim: fix density since the simulator/viewer track density in a

funny unit that is 100 times real density (default 1000).
Fix avatar drifting slowly when stationary flying.
Fix for physical prims getting corrected for being under terrain when it was
just its geometric center that was below terrain.
Add PreUpdatePropertyAction allowing plugable modifiction of phys
parameters returned from Bullet.
Fix an exception setting GravityMultiplier on initialization.
Update DLLs and SOs for good measure (no functional change).

1 files changed, 12 insertions, 5 deletions

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs b/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
index 3e0b4bc..329169f 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
@@ -49,6 +49,7 @@ public static class BSParam
     public static float MaxLinearVelocity { get; private set; }
     public static float MaxAngularVelocity { get; private set; }
     public static float MaxAddForceMagnitude { get; private set; }
+    public static float DensityScaleFactor { get; private set; }
 
     public static float LinearDamping { get; private set; }
     public static float AngularDamping { get; private set; }
@@ -281,29 +282,35 @@ public static class BSParam
         new ParameterDefn("MinObjectMass", "Minimum object mass (0.0001)",
             0.0001f,
             (s,cf,p,v) => { MinimumObjectMass = cf.GetFloat(p, v); },
-            (s) => { return (float)MinimumObjectMass; },
+            (s) => { return MinimumObjectMass; },
             (s,p,l,v) => { MinimumObjectMass = v; } ),
         new ParameterDefn("MaxObjectMass", "Maximum object mass (10000.01)",
             10000.01f,
             (s,cf,p,v) => { MaximumObjectMass = cf.GetFloat(p, v); },
-            (s) => { return (float)MaximumObjectMass; },
+            (s) => { return MaximumObjectMass; },
             (s,p,l,v) => { MaximumObjectMass = v; } ),
         new ParameterDefn("MaxLinearVelocity", "Maximum velocity magnitude that can be assigned to an object",
             1000.0f,
             (s,cf,p,v) => { MaxLinearVelocity = cf.GetFloat(p, v); },
-            (s) => { return (float)MaxLinearVelocity; },
+            (s) => { return MaxLinearVelocity; },
             (s,p,l,v) => { MaxLinearVelocity = v; } ),
         new ParameterDefn("MaxAngularVelocity", "Maximum rotational velocity magnitude that can be assigned to an object",
             1000.0f,
             (s,cf,p,v) => { MaxAngularVelocity = cf.GetFloat(p, v); },
-            (s) => { return (float)MaxAngularVelocity; },
+            (s) => { return MaxAngularVelocity; },
             (s,p,l,v) => { MaxAngularVelocity = v; } ),
         // LL documentation says thie number should be 20f for llApplyImpulse and 200f for llRezObject
         new ParameterDefn("MaxAddForceMagnitude", "Maximum force that can be applied by llApplyImpulse (SL says 20f)",
             20000.0f,
             (s,cf,p,v) => { MaxAddForceMagnitude = cf.GetFloat(p, v); },
-            (s) => { return (float)MaxAddForceMagnitude; },
+            (s) => { return MaxAddForceMagnitude; },
             (s,p,l,v) => { MaxAddForceMagnitude = v; } ),
+        // Density is passed around as 100kg/m3. This scales that to 1kg/m3.
+        new ParameterDefn("DensityScaleFactor", "Conversion for simulator/viewer density (100kg/m3) to physical density (1kg/m3)",
+            0.01f,
+            (s,cf,p,v) => { DensityScaleFactor = cf.GetFloat(p, v); },
+            (s) => { return DensityScaleFactor; },
+            (s,p,l,v) => { DensityScaleFactor = v; } ),
 
         new ParameterDefn("PID_D", "Derivitive factor for motion smoothing",
             2200f,